Improvement in fh



T. HAYES.

FILTER.

No. 60,51Z.- Patented Deo. 18, 1866.

niteh taies stmtffir.-

IMPROVEMENT IN FILTERS.

@tige Sfigetnle referat tu im their tettcrt ntmt mit mating tutt tf thetime.

TO ALL WHOM IT MAY CONERN:

Be it known that I, THOMAS HAYES, of Cambridge, in the county ofMiddlesex, and State of Massachusetts, have invented certainimprovements in Reversible Water Filters, of which the following is afull, clear, and exact description, reference being had to theaccompanying drawings, making part of this specification, in which-Figure 1 is a central vertical section through my improved water filter.

Figure'2 is a perspective view of the upper portion of -the interior ofthe same, the top of the casing being removed for this purpose. g

Figure 3 represents the interior of the lower portion of the filter.

My invention has for its object to produce a simple and eiicientapparatus for filtering water, which may be operated in a convenient andexpeditious manner, and my invention consists in a pair of double-actingvalves operated from the outside of the filter, the valves, as also areceptacle containing the material through which the water is to befiltered, being enclosed within a casing screwed to the supply-pipe orfaucet the position of the valves being instantly reversed to produce achange in the direction of the current of the water, in order that theimpurities which have collected on one side of the strainer of thereceptacle containing thc filtering medium may he washed awayntherefrom.when the clear filtered water flows through,vand the sediment iscollected by the. strainer on the opposite side ot the receptacle. i

To enable others skilled in the art to understand and use my invention,I will proceed to describe the manner in which I have` carried it out. t

In the said drawings, A is a shell or casing, the upper portion of theinside of which is furnished with a screw-thread, a, by which it may beattachedto the supply-pipe or faucet,l the lower end of the casingforming an orice, of delivery. A receptacle, B, containing ground quartzor other suitable filtering medium, and having two of its sides 4, and5, formed of fine wire gauze or netting, is placed within a closedchamber, dividing it into two compartments, C D, through the top ofwhich are formed the openings, cud, while the bottom of thesecompartments is provided with openings, ef; which incline outwardly', tocorrespond to the shape of the conical valves, g 7i z'j, on thcextremities of stems or rods, c, the rods being kept'in place andallowed to. move vertically up and down by the circular guides, l.Passing horizontally and diametrically through the casing, A, a shortdistance above the delivery orifice b, is placed a shaft, E, providedwith cams, F G, at right angles to each other, one cam being raisedwhile thepther is lowered by turning the shaft E by means of a knob vorhandle, m, on one of its ends projecting througli the shell or casing.The bottoms of the valves, tj, rest-uponfthc Cams, F G, which o en andclose as desiredh o eratin the handle m. On raisinfr thc cam, F, fifr.1, the valves, I

P y p g o o y h, are raised, thlis opening the passage c, and closingthe passage e. Simultaneously with the raising of the cam, F, the cam,G, is thrown down, thereby lowering the valves, z'j, by which thepassage,f, is opened and'cl closed. The lter being attached to thefaucet and the wer turned on, it passes down through the passage, c, inthe direction of the arrow into the compaiftment C, and thence throughthe side, 4, of the strainerinto the receptacle, B, containing theltering material, and through the opposite side, 5, ofthe strainer intothe com'- partment, D, thence down the passage,f, and out of thedolivery orifice, t; the water in its passage depositing the chiefportion of its impuritiesand sediment against the outside,'i4, of the,strainer of the compartment C, while the remainder of the sediment, if'any exists, is arrested bythe inside, '5, of the strainer of thecompartment D. When the sediment within the filter has accumulated tosuch an extent as to make it desirable to cleanse the same, the handle mis turned, thus reversing the position of the valvesl as seen in fig. 2,when the water enters by the opening, d, and passing in the oppositedirection from that pre'viouslydescribed, carries away thensedimentcollected on the side, 4, of the strainer of the compartment C, andafterbeing thoroughly cleansed, the clean w'ater commences to flow throughand the sediment is deposited on 'the outside, 5, of the strainer ofthecompartment D. When a quantity of water is to be drawn rapidly, withoutregard to its being filtered, it is only neces'- sary to turn the k obso that the camsgvill support the valves in such a position that theywill all be open, in

which case the water passes directly down the upper-passages, c d, intothe compartments C D, and through the lower passages, ef, out of theorice b. In thc foregoing description I fhavo spoken of double-actingvalves of the form shown in the drawings, usually denominated poppetvalves, but I do not limit myself to the use of these, as it is evidentthat 1 mayemploy flap or globe valves or slide valves, moving verticallyover their pas- @om i 2 sages, or any other description of valvessubstantially like them; and instead of their being operated by cams, FG, a spring lever, or other device operated from the outside7 may beemployed for this purpose without departing from the spirit of myinvention.

What I claim as my invention, and desire to secure by Letters Patent,is-

The passages c d ef, and valves g ,h z'j, operated by cams F Gr, allarranged for the purpose of reversing the current of Water through thelterer, substantiallyas set forth.v

THOMAS HAYES; -1

Witnesses:

P. E. TESCHEMACHER, N. W. STEARNS.

